PC not powering up straight away?

pestt · 12 Nov 2019 at 06:55

Hi,
My Coolermaster Cosmos has been erratically not powering up on the button for a while now but is now doing it every time. I have to hold the power/reset button down for approx 10 seconds, press again, then it will fire up. Any ideas if this could be the PSU giving up? The PSU is about 5 years old, an HFX 1050W and has been brilliant.
If I restart through Windows, no problem. Just when I power up from off.
Any help would be great, I'm stumped and don't have another PSU to try out.
Cheers.

pestt · 12 Nov 2019 at 19:59

Cool, will try both those. Already put a new BIOS battery in to check that, no change. I've also managed to get hold of a good PSU to try.
Thanks guys, appreciated.

pestt · 14 Nov 2019 at 18:58

As a quick follow up that is slightly amusing.
I tried the suggestions but to no avail, I resigned myself to getting another PSU. The night before I was going to put the PSU in I powered the PC down as normal then pulled the plug from the wall as I was going to work on it and wanted it totally 'dead'.
Curiosity made me plug it back in to try it one last time. It powered up straight away and has been fine ever since.
Screw you electricity.

pestt · 15 Nov 2019 at 07:42

peterwalkley said:
Lol, so the good old switch it off and on again worked, you were just doing it wrong

Ha! Pretty much, yeah.
Just goes to show.
A mate was convinced my mobo was dying, would have been even more embarrassing if I'd swapped that out too!